One-night only (October 19th) for this musical blast from the past:  The Rat Pack Is Back, baby, and they’re the definition of cool. A talented tribute group featuring uncanny vocal re-creations of Frank Sinatra, Sammy Davis Jr., Dean Martin and Joey Bishop, The Rat Pack Is Back is a ring-a-ding journey through time to the Sands Hotel and casino in Vegas, where the Rat Pack lived large back in the day with their no-holds-barred nightclub act. They delivered style with substance, swing with swagger and a nonstop party to which everyone wanted access. Now you can see an uncanny recreation of one of the Rat Pack’s raucous, antic-filled performances, featuring Bishop’s hilarious comedy and performances of such standards as Sinatra’s “You Make Me Feel So Young,” “A Foggy Day,” Martin’s “That’s Amoré” and Davis’ “Mr. Bojangles.” Backing the singers is a swinging 12-piece live orchestra performing period-perfect orchestrations.